The green colour of leaves is due to the presence of :

Options :
  1. Metallic ions
  2. Chlorophyll
  3. Chloroplast
  4. Haemoglobin
Answer and Explanation :-

Answer: Option 2

Explanation:

Chlorophyll change the colour of the leaves. When they are green Chlorophyll is very strong and when the leaves change their colour they are little bit weak.

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